クロラムフェニコ-ルに浸漬したオオジシバリ葉による蚕の全齢飼育

概要

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Larvae of the silkworm; Bombyx mori L., were reared on leaves of Lactuca debilis Maxim. dipped in chloramphenicol aquous solution, throughout the larval stage in early spring of 1975. The results obtained are as follows.1) Starting from 3 batches of 50 newly hatched larvae, 18, 24 and 38 cocoons, and 15, 20 and 34 moths were obtained. These moths performed normal mating and oviposition.2) The larval period was about 23 days at 25°C. The mean weight of cocoon and cocoon shell was 1.37-1.48g and 243-287mg. The adults laid 584-632 eggs, most of which were fertilized.3) Dead larvae appeared during the 2nd and 3rd instars and they exhibited the symptom like "shrinkage after molting".
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